Disk harrow.



No. V8953.841.

DISK HARROW. APPLICATION FILED A.PRJD, 1906.

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' .A TTORNEYS* PATBNTED GCT 23, 1906.

G. F. MAIERS.;

DISK HARROW.

APPLIGATION HLBD APR.10.1906.

2 SHEETS-SHE@ 2,

W1 YWESSES.-

UNITED sriinfrgns PATENTE OFFICE.

' GEoRGEr. MAIERS, or G oLuTA, CALIFORNIA.

DISK imm-zow.

To all Awhom t may concern:

Be it .known that I, GEORGE F. MAIERs, a citizen of the United States,'residing at Goleta, in the county of Santa Barbara and State .of California, have invented a new and useful Disk Harrow, of which the following is a s cication.

's invention relates to rotary-disk harrows; and amo tion are to'simp ify and im vrove the constructionand operation of t 's class of devices.

The invention has ,s cial reference to that class of machines in w 'ch a pluralityv of disks are mounted u on a common axis. When a plurality "of dis s have thus been mounted in series it has been difficult to overcome the side draft or the tendencyto lateral Inovement of the machine caused b 4 the suction of the disks in engaginglthe soi ,and one ob-v jectI of the present'mvention is to overcome this tendenc to lateral movement orside draft. Bv t e present invention I also 'aim to avoid the formation 0f ridges and to leave the land in a mellow, pulverized, 'and level*y condition.

Another feature of the invention, consists in improved steering means to faillitate the turning of corners or angles without necessitating the liftii of the disks from the ground, so that the lan will be operated upon at the corners of the field where turns are made.

Gther features ofthe invention reside in imroved structural features," 'to be hereinafter,

ascribed. With these and" other ends in view, which will readily appear as the nature of the inven-y tion'is better understood, the same consists in the improved construction andnovel arrangement and combination'of parts, which 'willbe hereinafter fully described, and,A particularly pointedout in the claimsf .f In the accom anying drawings have?` been illustrated siinp e and preferredforms of the invention, itv being, however, understood that no limitation 's 'necessarily made to the' re'- cisestructura details therein e`xhibited ut that changes, alterations, and modificationst within the scope of the invention may be `I nade when desiredl `In theI drawings, Figure 1 isla ,top plan view of a rotaryfdisklharrow constructed in accordance with the principles `of the .invention. Fig. 3 is a detail `plan view. illustrating a-modiJ .l :fication of the' means 4for preventing side specnatioa of Letters Patent.

Application filed April 10, 1908. Serial No. 311.010.'

the objects of the inven- Fig. 2 is aside elevation of the same.`

Patented oct. 2s, 190e...

trating a further modification. Figs. 5 and 6 are top plan views illustrating modified forms draft. Fig. 4 is a detail top planview illusare indicated throughout'iby similar clliaracters of reference.

The frame A in the invention (illustrated in Figs. 1 and 2 of the drawings) includes three parallel transverselydis osed bars 1, 2, and 3, which arev connected Wit and by the side bars 4 ,and 5. The said side bars are, connected at their front ends by .a cross-bar 6,' which' is disposed obliquely with relation to the transverse bars 1 ,12, and 3 The barrow-disks 7,- which'are o f the'o'rdnary concave' -convex type, are mounted upon a shaft 8, which is su ported in bearings, as 9, upon thevunder si e of the harrowframe, said disk-carrying shaft being dis.-

.preferredI form of the posed intermediate the cross-bars 2 and 3,

whj ch latter is the rear cro`ss-bar of the frame.

The disks may be of an desired size, and any desired number of lese disks may be used. It .will also be understood that the' disks maybe mounted for rotation upon the Psupporting-shaft, or the said disks may be fixed upon the shaft and the latter ma then be supported for rotation, or the sha t may be sup orted for rotation in'its bearings, a'nd the dis s maly the shaft, al Within the scope of the invention. Theframe of the machine has been.

'shown as provided with a central longitudi- 'nal bar 9', serving toreinforce the transverse bars, whchflatter, -will naturally be'k sub jected to a considerable strain when the Inabe mounted for rotation upon chine is in operation. It will be understood I v i:

that an intermediate bearing for the shaft 8 shaft to resist strain.

The cross-bars 1 and 2 are connected with each other by means of Abars or braces 10 110,

.may be mounted upon the under side ofthe j bar 9, thus enabling thesaid ,disk-carrying and u on said bracesf'as well as upon the lonf gitudinal bar 9 intermediate the cross-bars 1 2, there are secured boxes or bearings 1 l, in

which are 'ournaled vertical shafts or spin- .l

dles 12.y imilar boxes or.bearings"'13 are secured upon the side members A and 5of .the

frame; but the boxes 13` are. rovided with slots 1.4 for the passage of thev astening b l' t s or members 15 ,thus enabling ysaid boxes to verticallyv adjusted together with the shafts.

16, thatjare ]ournaled in saipl boxes and the parts connected with said f yThe' 6c maybe securely retained shafts 12 and 16 carry rotary blades or disks 17 and 18, and with regard to these blades or disks it is desired to be understood that they may be flat disks, as illustrated in Figs.

1 and 2 of the drawings, and that disks of this character will probably be preferred; but gno limitation is` made to the disks of this character, inasmuch as concave-convex disks similar to the disks 7 may be substituted. ro It is also desired to be understood that while the disks '17 and. 18 are preferably mounted in a tilted position, as will he best seen by referenceto Fig. 1, the tilt of said disks may be varied', or said disks may be disposed per- 1-5 pendicularly, if so desired, without departing from the spirit or scope of the invention. ,The 4expliclt function of these disks is to counteract the tendency to side draft, caused by the suction of the disks 7, and the disks 17 2o and 18 are to be disposed in the most advantageous position to attain this result under varying conditions of work to be performed.

The shafts or spindles 12V and 16 are proj vided near their upper ends with arms orA z5 cranks, designated, respectively, 19 and 2t), the latter cranks being preferably secured j adjustahly upon their respective shafts, as

' by means of-setscrews 21. The cranks 19 are connected in series by means of a link- `3o rod 22, and the latter is connected with the cranks 2O by means of short links 2S, so that the cranks of the several shafts 12 and 16 will be connected in series and maybe simultaneously operated to turn the several shafts 3 5 upon their axes, thus changing or adjusting the angles of the disks 17 and 18 with relation to the line of progress, The separate links 23 and the adjustable cranks 2() are obviously required when thi boxes 13, carrying '4o thc shafts 16 and disks 18, are adjusted vertically, this being sometimes done in order t'o su lport the frame of the machine upon the dldlrs 18, as upon carrying-wheels, lor'the purpose of elevating the intermediate disks 17. Under such circumstances carryingwheels ot' suitable construction may also be substituted for the disks IS; but it is desired to be understood that stationary boxes, like the boxes 11, may be substituted for the 5o boxes .13, and the cranks .Zt) may then be permanently secured upon their respective shafts and the separate links 23 may be dispcnsed with, the link-bar 22 being` extended and connected directly with the cranks 20.

One of the shal'ts' 12 is provided with a lat- .eraly-extendinpr arm 2d, which is coilnected by a link-rod 25 with an adjusting-lever 26, plvoted upon and adapted for engagement with asegment-rack 27', whereby th(` parts at various adjustments.

The front cross-bar of' the frame is provided with a bearing for a vertical spindle or .shaft 2 7, carrying;r a steeringwheel or disk 2S and having at its upper end a crank 29. A l

@sassi draft rnei'nber 30 is pivoted u on the .front cross-bar G, and u on Vsaid: t raft member there is pivoted a be l-crank lever B, one arm of which, 31, is connected with the crank 29 by a link-bar The other arm 33 of the bell-crank lever is connected by a link-rod 34 with an adjustingg-lever 35, pivoted upon and adapted for engagement with a rack-segment 36, which is supported upon the rear crossbar 3 of the frame in a position convenient to the driver or operator, whose seat 37 is mounted upon a spring-bar 3S, likewise connected with said rear cross-bar, the seat beingT in a position that will enable the driver to oversee the operation of the machine. When themachine is in operation, it is propelled by draft attached to the draft member 30, as by means ol' a link 39. When the machine is tohe transported, the drclt is preferably attached to tht-linklist 32, by .means ol' a draft-hook 44), adjustably connected with said bar.

.As will be observed. by reference to Fig'. 1A

of the drawings, the draftJnember 30 is connected adjustablv with the front cross-bar 6 of the frame, said cross-bar being novidod with a plurality of apertures 41 for t ie rece J- tion of theboltorconnectingnieniber42. T ie link-bar 32 is likewise"connected adjnstably with the crank 29, said har being provided with a plurality ol apertures 43 for the passage ol the connecting holt or member 44.

From an inspection of Fig. 1 it will be obserived that the longitudinal bar 9extends lthrough approximately the `center of `the frame, for which reason if the draft member 30 were attached to the frame adjacent the. `forward end of the center bar 9 said frame" would be dragged approximately in a straight line behind the team, although the osition of the frame might be slightly all'ectef by the side draft of the disks 7` As one oi the purposes oi' the present invention is to cause the cutting-disks 7 automatically to assumo an angular position witll relation to the line of draft, l propose to secure the draft member 3() loosely to the frame at one side of the center of balance thereof, so that the draft action, which is in theI direction of the arrow in Fig. 1, will cause the frame to swing,y into such position that the disks "i will extend at an angle a ross the line ol draft. lt will be apparent that by adjusting the draft member 3U toward or awayfrom the center of balance of the frame by means of the bolt 12 and perforations 41 the degree of the angle of the disks with respect to the lino of draft can be changed'. The adjustment of the draft member 30 is rendered easy by reason of the fact that the oblique front har G in theI msition shown in Fig. 1 extends at a right angle across the linev of draft. lt will be obvious that b f nnans of my arrangement in which the dra t member is loosclyconnected with the trame at one side of the center of balance thereof, so that the disks 7 will automatically assume an IOO 1,5 .i ydraft-animals are not bothered b a rigid pole,

'which isy subject to severe latere' strains. Iwill be observed,^further, from Fig. l that the c' angular position with respect Atothe line of frame-are avoided, it being understood that where a rigid` pole isr employed for forcibly holding the disks at an angle vwith respect to the line .of draft'the side draft of the disks im oses a lateral strain on the rear end of the po e and also has a tendenc to interfere with the free movement of the raft-animals. In m arrangement by which the draft member is iroosely; connected with the frame at ne side of the center of balance, so that the disks are forced to assume .an angular position, the

counter-disks 17 and 18- can bel adjusted so thatfthcy will extend across-the line of draft at anv angle thereto and also at an angle with y respect to the disks 7 for which reason the counter-disks and the cutting-disks will balance each other and the frame in which the are mountedwill bedrawn easily in theproper direction without having a tendency to move laterall with respect tothe line of draft.

The facility 4with which the disks may be angled isan" important feature of the invention. When the machine is in operation, the

K disks 17 and 18 maybe adjusted by 1nar1ipu lating the lever 26 to the most advantageous angle orY to the position where theyffwill most effectively,counteract the tendency t0 side draftl caused by the suctionfof they disks 7. When the machine is to be trans irted, the` draft will be applied to the` dra t-hook 40, which is located in such a position that the disks 7' will travel straight in a forward direction. The machine .may besteered by the steering-gear, which is effective to turn the, steering wheel or disk 28 in the desired direction. 1

A, tongue may, if desired, be substituted for the draft member 30.

ln Fig; 3 of' the drawings has `been illustratcd a `modification of the invention which is applicable to the form of the invention illustrated in Fig. 1, as well as to any of the modified forms of frame structure which may beuscdwithin thc scope of the invention'. Under this modification there are piv` o tcd upon the frame-barZ in front of the disk-carrying shaft 8 a plurality of frames 45, each provided withl bearings for a shaft 46, carrying a disk 47, which said disk, be it understood may be of any desiredeonstruction, the-office of the disks 47 being ,to counteractthetendency to side draft inthe same manner as the disks 17 and 18 in Fig. 1'. In Fig. 3, however, Vthe disks 47vare 0f the concavofco'nvex t pe, and said disks are faced oppositel to t e disks 7. The forward free ends of t e frames 45 are connected in series by a link-bar 48, and the latter isconnected it' l54', whereby the shaft 48 maybe -gllustrat'ed in F' 47 at whatever angle may be esirable or nec- `es'sary for the end in view.

Under the construction illustrated in Fig.

f4 of the drawings the disks there designatedv .47)' are supported for rotation upon shaftsl 48', each'of said shafts being supported at one end, as upon a opposite end of eac shaft ing slidably supported, 'as by means of a bracket or sup rt- -mg member 55.

The free ends of thexs aftsA 48 are connected by links 51, with radial. arms 52', extendin from a suitably-support-A ed rock-shaft 53', aving an adjusti -lever'- justed so as to set the disks 47 at various angles to the lineof progress. A Under amodification of the invention 5 of the drawings) a draftf ame C is provi ed,;sa.id frame being shown as including a air of side members 51, converging forwar ly to an apex 52, where draft may be applied, as through the medium of a link 53. vPivctally mounted upon the draft'- frame C, near one of the rear' corners of the latter, isa disk-carrying frame D, which latter has beenshownas being of rectangular shape. Said idisk-cairyin rame serves to supporta disks-carrying s aft 54, having a lurality ef disksl 55.` The disk-carrying pivotal in or bolt49, the i rame is also provided'lwith bearings for ya Aplurality of vertical shafts 56, carryinreiiisks' v 5,7, :which may be ap ropriately descr: counter-disks, sincet eir ose is to countegjact the tendency to si e raft caused by the disks 55, in the same manner as the disks all of which may be ap ropriately known as counter-disks]7 The isks 57 ma be of any desired construction, and the sha ts 56, car- 17 and 18 in Fig. 1 and the disks/17 in Fig. 3, r`

rying said disks, are provided at their up l r I ends with cranks 58, that are ccnnec in .bolts 65,-extending throughthe keepers- 62- and engaging apertures 66 in the'segment- `bar 63, may be utilized for the purpose of sewith clips or keepers 62,- l

The

curing the disk-carrying framed) at various be set or adusted to various angles with rela tion tothe ine of progress. Under the con'- at which the draft is applied to the frame. Under still another modification, which is fadjustments, thus enabling the disks 55 to` illustrated. in Fig. 6 of the drawings, a suit abie frame structure E isprovided with bearings for alining shafts t?, carrying disks 63, said frame being also providedfvvith o pivoted tongue or draft member 69, which maf,Y ne adjusted to various angles by means of a pin 'or bolt 70, adanted to engage any one of plurality of periorations 71 in e, segment-bar '72, which is secured upon the frame The latter is provided with weight inclino-ers 73, provided with bearings for vertical shafts 74, carrying eounter-disks 75 and provided ut their'upper ends ywith cranks 76, connected with ,eacn other by a linkoar 77Y which latter may be adjustaloiy secured with relation 'to the frame, as by Ineens of a )in or boltf, extending through any one o a plurality of perorations 79 in the said iinlnliar. The

counter-disks may thus be adjusted to va-` zo rions angles with relation to the cutting- 3o invention in its Various forme disks 68, and the :ingle oi the iatter with relation to the line'oi pro rees wiil be deten mined by the position o the draft membe.' 69 With relation to the frame E. The tongue ordrait member 69 has been shown as carryinv a sont 80 for tile driver or operator.

lvirorn the foregoing deseription, taken in connection with the drawings heretoan* nexed, the operation and advantages of the will be readily ,understood by those skilled in the ort o which it anpertains.

The iaci ity with which the cnttingedislrs in the various forms of the invention may lie adjusted to verious. anles with relation to the line of progr yss w'll be readily appie ciated, 'and in any of the various forms oi the Invention provision is made for adjusting the countendislrs to the moet advantageous 4o position with relation to .the cutting-disks- The device, as a whole, is simple in oonstruction, easily operated, 'and thoroughly efficient for the purposes for which it is procounter-disks supiorted in front of end ciosel)r ad jacent to t points of th" counter-disks being arranged in a line wliicn is parallel with tlie disk-carrying shaft and means for adjusting the countendisks at various angles.

2. In a rotary-disk barrow, a sllaitiiavin a plurality of cutting-disks, anda pluralit)r o indepemlentlyL pivoted counter-disks supported' in series, the pivotpoints oi' the 6o counter-disks being arranged in a line which is parallel with the sliait.` v 3. In a rotary-dislilierrow, s piurailty oi cuttlng-dlsks having a common axis, and a le cutti11g-dislis,tlie pivot eoaeei angle to tire cutting-disks, means for adjusting said counter-disks, and a draft member loosely connected for swinging -inovoinent with seid 'frame at one side of the center of balance thereof, whereby the draft action automatically causes the cutting-disks to assume an angular position with relation to the line of" droit.

6. .ln a rotary disk narrow, a frame, a shaft ionrnsieo in said frame, a series of out"Y ting-disks upon said shaft, e plurality .of coi'lntendislilcarryng shafts arranged in Aa line which is parallel with the cutter-.dials carrying shaft, ineens connecting the counter disk carrying-shafts ior'ad'ustment in series, and draft means adjust/ably connected with the frame .for effecting adjustment of the angles oi the cutting-disks with relation to the line oi" progress.

7 in a rotary-disk harrow, a frame, a shaft journaled in said frame, a series of cuttingdisfrs upon seid shaft, a plurality of counter disks each having an individual pivotal connection with the mein frame the pivotal connection of all the counter-disks being arranged in a line which is parallel with the cuttingdisk-carrying shaft, and nzeans connecting the counter-disk for adjustment in series.

8. in eJ rotary-dislrlisrrow, a frame, a shaft supported for rotation in said fialne, a series of cutting-disks uponsaid shaft, a plurality of individual counter-disks connected pivotally with the main frame the pivotJpoints of all tiievconntendisks being arranged in a line which is parallel to the disk-carring shaft, means connecting the counter-disks for adjustnient in series,and draft means edjustably connected with the mainframe to regulate the ansie of the cutting-dislr-carrying shaft to the line oi progress;

ln testimonyr that i claim the foregoing as my own I have .hereto aiiixed my signature in the presence of two Witnesses. i

L. HURLBUT, LAURA MCDANIEL.

TOO

IOR 

